A. Nikki has 4 sticks of gum and Breanne has 5 times as many sticks of gum as Nikki.
B. To see a football game you will pay four dollars for admission and then you will see 5 times as many friends.
C. The cost for bowling is 4 dollars for the shoes and 5 dollars for every game you play.
D. Justin has 4 games and he is going to sell them to buy 5 times as many games.

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.